- to disturb or disquiet greatly in mind; agitate.
- to throw into great disorder; derange.
- Astronomy. to cause perturbation in the orbit of (a celestial body).
Origin of perturb
SynonymsSee more synonyms for perturb on Thesaurus.com
Examples from the Web for unperturbed
Unperturbed, the Queen came up to the top deck without an umbrella and waved to the vast assembly on the banks of the river.Imagining Prince Charles as King Makes All of Britain Wish They Could Leave Like Scotland
September 17, 2014
Unperturbed, Lamb said words to the effect: I get asked this question often.David Frost and the Art of the Interview
September 7, 2013
For his part, Xianping is unperturbed by the commotion surrounding his modeling debut.72-Year-Old Chinese Grandfather Models Teen Girl's Clothes
November 20, 2012
During the return journey his mind was quite calm and unperturbed.Mary Gray
"I mean it won't be amusing for others," said Nick, unperturbed by this levity.The Tragic Muse
After that meeting Macey was unperturbed, but Evans was a deeply worried man.The Galaxy Primes
Edward Elmer Smith
"There's gun-men and gun-men," said Cherry Bim, unperturbed by the patent sarcasm.The Book of All-Power
“‘They that have no invention should be hanged,’” quoted Peggy, unperturbed.About Peggy Saville
Mrs. G. de Horne Vaizey
- not disturbed or troubledunperturbed by the prospect of a fight
- to disturb the composure of; trouble
- to throw into disorder
- physics astronomy to cause (a planet, electron, etc) to undergo a perturbation
Word Origin and History for unperturbed
late 14c., from Old French perturber "disturb, confuse" (14c.) and directly from Latin perturbare "to confuse, disorder, disturb," especially of states of the mind, from per- "through" (see per) + turbare "disturb, confuse," from turba "turmoil, crowd" (see turbid). Related: Perturbed; perturbing.